beowne



Safety Ship.

No. 236,302. Patented Jan. 4,1881.

J' lllllill NITED STATES PATENT OFFICE.

JOHN G. BROWNE, OF LONDON, ENGLAND.

SAFETY-SHIP.

SPECIFICATION forming part of Letters Patent No. 236,302, dated January 4, 1881.

Application filed November 10, 1880. (No model.) Patented in England J nne 14, 1879.

lowing is a specification.

The object of my invention is to construct vessels with overhanging bilges as air-tight compartments, and attaching them to vertical girders running from end to end on each side. Longitudinal concave channels are formed under these bilges, within which screw-propellers can work, these being on shafts set at an angle through the sides of the hull, and worked direct by engines.

The curved frames of my vessel terminate at the vertical girders, and longitudinal outside stringers are connected to the frames of the hull and to the frames of the overhanging bilges to give strength along where the butt-seams of the two frames are situated. The transverse beams are attached to the frames of the hull, other or inside stringers, of angle-iron,securing the beams to the vertical girders.

The bottom of my vessel is flattis'n, and may have an extended or plow prow in advance of the bow proper, said prow having a flattish base and sloped upper surfaces on each side of its central line to divide the water and to guide it under the overhanging bilges for producing steadiness while the vessel is under steam. I fit uprights on the beams and form side passages between them and the vertical girders, decks being arranged over the passages.

In the annexed drawings, Figure 1 represents a section of my vessel.

v A A are the overhanging bilge-frames, to which are riveted the partitions B B, to form compartments along the sides.

0 U are the vertical girders, to which the frames A A are rivet-ed, the girders being also attached to the beams D D by an gle-iron stringers E E.

F F are outside stringers, overlapping the seams and connecting the butt-ends of the bilge-frames A A and of the frames G G of the hull.

H H are uprights upon the beams D D, spaces I I being formed between the said up rights H H and the vertical girders O O to serve as passages, or as berths, if partitioned off.

J J are decks over the passages I I, and K is a higher deck, giving room under it and along the center of the vessel for saloon or other purposes.

L is the bottom, of fiat form, shaped from the frames of the hull.

M M are screw-propellers, arranged in the concave channels or shafts N N, set at an angle through the sides of the hull at about midship, so that the screws are always submerged and protected from injury.

Fig. 2 shows a modification in which the hull-frames G G are sufficiently long to form the frames of theoverhanging bilges; also, whereby the outside stringers F F are dispensed with, the beams D being provided with flanged knee-pieces for the attachment of the hull-frames Gr G and the vertical girders thereto. A

I am aware that it is not broadly new to arrange rotating propeller-shafts at an angle within channels on opposite sides of the hull of a vessel, as in English Patent No. 3,997 of 1875, and such, therefore, I disclaim.

I claim as my invention In the construction of ships, the combination of the vertical girders O 0, extending from end to end of thewessel, the overhanging bilge-frames A A, connected with the girders, the partitions B B, attached to the bilge-frames and forming air-tight compartments throughout the length of the overhangin g bilge-frames, and the hull-frames G G, connected with the lower portions of the latter and extending in a curved plane to the flat bottom H, for forming longitudinal continuous concave side channels below the overhanging bilge-frames, within which are arranged the propeller-shafts, all substantially as and for the purpose described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN OOLLIS BROWNE. Witnesses:

HENRY GARDNER, HENRY J. GARDNER. 

